Construction Medicals / Safety Critical Medicals
Safety Critical Medicals for Construction Workers


More and more main contractors are now requiring workers to undertake these medicals before they are allowing them on site to work.

There are, of course, many safety critical roles outside of construction. This is no problem, the principals are very similar are we can apply our expertise to tailor our Safety Critical Medical to any appropriate standard and risk profile.

If your employees need medical clearance under several different schemes then Techno CTA can offer you medical tests.

“Safety Critical Worker” is defined as:


“Where the ill health of an individual may compromise their ability to undertake a task defined as safety critical, thereby posing a significant risk to the health and safety of others.”

It is important that safety-critical workers are not suffering from medical conditions or undergoing any medical treatment which is likely to cause sudden loss of consciousness or incapacity, impairment of awareness, concentration, balance or coordination or significant limitation of mobility. A medical, such as a fitness-for-task health check, as identified in the National Industry Standards for Occupational Health, would go a long way towards ensuring these legal requirements are met.

Who needs a safety critical worker medical?


If you have workers who are undertaking safety critical tasks such as operating plant machinery, working on scaffolding and at height, roadside construction or any other job that involves risk, then making sure they are healthy enough is imperative. A worker may well struggle on with a medical condition without realising its potential impact and proper screening can help highlight and address situations such as these.

In the construction industry the following roles have been defined as ‘safety critical’:

  • LGV/HGV Driver
  • Plant Operators
  • Scaffolder/Rigger
  • Slinger/Signaller/Banksman/Traffic Marshall
  • Steel Erector Structural/Fabricator
  • Steeplejack
  • Tunnel Boring Gangs
  • Roadside (high speed)
  • Tunnelling
  • Confined Space workers
  • Working at Height where control measures not practicable


Allowing for this guidance, Employers will need to decide whether an activity contains a safety-critical element and an incapacitated worker might expose themselves or others to a significant risk of harm.

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What does the safety critical worker medical consist of?


  • A baseline SCW health questionnaire to establish any current or previous medical/psychological health history
  • Blood pressure measurement
  • Height, Weight & Body Mass
  • Audiometry – hearing test
  • Spirometry – Lung function test (if indicated – job specific)
  • Visual Acuity, colour vision and peripheral vision screen
  • Urinalysis for diabetes or other health issues
  • Drug & Alcohol (if required)
Who carries out the safety critical worker medical test?

Our Accredited Occupational Health Partners.

An approved qualified Occupational Health Technician will assess the individual and the work they will be doing. The assessment will include physical and mental capabilities, existing and past health conditions including medication and previous employment risks.

Where is the safety critical worker medical test carried out?


The test is carried out at one of our testcentres every Fridays and Sundays mornings.